CN105758311B - A kind of device that guard frame rail mounting hole detection is carried out using repeating query light source - Google Patents

Abstract

The invention discloses a kind of devices that guard frame rail mounting hole detection is carried out using repeating query light source, include source of parallel light, industrial camera, speculum group and semi-transparent semi-reflecting microscope group including pedestal, conveyer belt, close to switch, block, push cylinder, measurement bracket, camera fixed frame, image taking module, closing housing and compression cylinder, described image taking module.The present invention is utilized in the directional light cover to same industrial camera that speculum group and semi-transparent semi-reflecting microscope group project four sources of parallel light, and four sources of parallel light is controlled to open in turn successively using tdm controller, it shoots four sub-pictures successively using industrial camera, and judges whether the center of mounting hole and size are qualified using image recognition technology；If image formed by four sources of parallel light shot is identical, then it represents that the mounting hole of guard frame rail to be measured is qualified, if shooting four sources of parallel light institutes into image is misaligned or image exists and lacks spot, then it represents that the mounting hole of guard frame rail to be measured is unqualified.

Description

A device for detecting installation holes of shelf beams by using round-robin light sources

technical field

The invention relates to the field of shelf crossbeam detection, and more specifically, to a device for detecting whether the shelf crossbeam is qualified.

Background technique

Modern large-scale production promotes the socialization, specialization, high mechanization and automation of industrial production, which requires that the supply of materials should be distributed in a timely, rapid and accurate manner, and also promotes the rapid development of storage technology. As a member of storage equipment, steel shelves are an indispensable part of modern logistics centers and distribution centers. Shelves are an important tool for warehouse modernization and efficiency improvement. Shelves generally refer to shelves for storing goods, and shelves are storage equipment for storing items. For example, in general stores, goods are often displayed on shelves. In order to improve the display of goods and facilitate loading and unloading of goods, a large number of different components are used. Among them, whether the length of the shelf beam is qualified or not directly affects the ability of the shelf. Normal installation will affect the final quality of the shelf.

Existing shelf beams are basically made of sheet metal components after rapid stamping and cutting. The shape of the shelf beams is long strips, with a pair of mounting holes at both ends, and one side of the long strips is turned up to form a support surface. To strengthen the load-bearing capacity of the beam, several pairs of mounting holes are also arranged on its supporting surface. The length of the shelf beam is a very important indicator of whether the shelf beam is qualified. At the same time, the position of the installation hole must be very accurate when the length is qualified. However, the shelf beam needs to go through three processes of stamping, punching and cutting in the production process. The length detection process of the shelf beam is measured after all processes are completed. The measurement method is often manual sampling inspection; because the length detection is It is carried out after all the processes are completed. Therefore, once a fault occurs in a certain process in the production and is not found in time, it will lead to batches of unqualified products. Qualified devices are particularly necessary.

The purpose of the present invention is to automatically and continuously detect a sheet metal strip shelf beam with a pair of installation holes at both ends, so as to know whether there is a failure in time, so as to timely feedback control the pre-process.

Since the position of the installation hole of the shelf beam is fixed, just use the self-learning method to select a standard part, use an industrial camera to take pictures of the standard hole, as a standard picture, and use an industrial camera when inspecting the shelf beam to be tested. The photographed picture is compared with the standard picture, so that the length of the shelf beam to be tested can be judged by whether the position of the mounting hole is deviated from the standard part, and the mounting hole can be judged by observing whether the photographed mounting hole is defective Eligibility.

However, the holes captured by an industrial camera are discrete holes, and the distance between the two installation holes captured by the same industrial camera is relatively large, resulting in difficult image processing and low precision, and the use of high-precision industrial cameras is bound to cause Increase the overall cost, so it does not meet the actual production needs.

Contents of the invention

The object of the present invention is to address the above-mentioned deficiencies in the prior art, and to provide a device for detecting the mounting holes of the shelf beams using a round-robin light source. The device uses an industrial camera to accurately measure the length of the shelf beams and the position of the mounting holes after the cutting process Measurement, and the device does not require manual operation and has a high degree of automation. It can know whether the shelf beam is qualified in time to adjust other pre-processes in time, thereby improving the overall production quality of the shelf beam.

The technical solution of the present invention is realized in the following way: a device for detecting the mounting holes of shelf beams by using a round-robin light source, including a base, a conveyor belt, a proximity switch, a stopper, a push cylinder, a measuring bracket, a camera fixing frame, and an image shooting Module, closed housing and pressing cylinder, the closed housing is fixed on the base, the conveyor belt, proximity switch, stopper, measuring bracket, camera fixing frame, image capture module and pressing cylinder are all arranged in the closed Inside the housing; the conveyor belt is set on the base, the feed port of the conveyor belt is connected to the discharge port of the pre-cutting process, and the end of the conveyor belt is sequentially provided with a proximity switch and a stopper along the direction of the conveyor belt. The proximity switch is embedded in the base and is used to detect whether there is a workpiece passing on the base at the corresponding position; the stopper is fixed above the base and used to limit the workpiece; one side of the conveyor belt is provided with a The pushing cylinder is set in the direction, and the other side is provided with a measuring bracket. After the proximity switch is triggered, the movement of the pushing cylinder is controlled. The pushing cylinder pushes the beam of the shelf to be measured on the conveyor belt to the measuring bracket; the pressing cylinder is set in the measuring bracket. On the bracket and close to the feeding port of the conveyor belt, the compression cylinder is used to compress the workpiece along the moving direction of the conveyor belt; the camera holder is fixed directly above the measurement bracket, and the left and right ends of the camera holder pass through two The root bracket is fixed on the base; the two ends of the measuring bracket are connected to the base through two rotating shafts, and the turning drive module is respectively connected to the base and the measuring bracket, and the turning driving module drives the measuring bracket along the two the axis of rotation rotates;

The image capturing module includes a parallel light source, an industrial camera, a time-sharing controller, a mirror group and a half-mirror group, and the parallel light source is provided with four, which are respectively a first parallel light source, a second parallel light source, a second parallel light source, and a second parallel light source. Three parallel light sources and the fourth parallel light source, the time-sharing controller connects the first parallel light source, the second parallel light source, the third parallel light source and the fourth parallel light source and controls the first parallel light source, the second parallel light source, the third parallel light source The light source and the fourth parallel light source are turned on in turn, the reflector group includes a first reflector, a second reflector and a third reflector, and the half-mirror group includes a first half-mirror, a second half-mirror Two half mirrors and a third half mirror, the first parallel light source, the second parallel light source, the third parallel light source and the fourth parallel light source are all arranged at the bottom of the measuring bracket, the first parallel light source , the second parallel light source, the third parallel light source and the fourth parallel light source are distributed in a square, and the first parallel light source, the second parallel light source, the third parallel light source and the fourth parallel light source are respectively used to provide Four parallel light rays of four mounting holes on the workpiece; an industrial camera, a first half-mirror and a second half-mirror are arranged in sequence directly above the first parallel light source, and the industrial camera fixed on the camera fixing frame, a first reflector is provided directly above the second parallel light source, and a second reflector and a third half-reflector are sequentially provided directly above the third parallel light source from top to bottom Mirror, the third reflector is provided directly above the fourth parallel light source; the height of the first half mirror and the second reflector are the same and are all inclined at 45 degrees to the direction of conveyor belt movement. The second half-mirror, the third half-mirror, the first reflector and the second reflector have the same height and are all inclined at 45 degrees to the direction perpendicular to the movement of the conveyor belt; the first parallel light source emits The parallel rays of light from the second parallel light source pass through the first reflector, the second half-mirror in sequence, and then irradiate the industrial camera. mirror and the first half-mirror and irradiates the industrial camera, and the parallel rays emitted by the third parallel light source pass through the third half-mirror, the second reflector and the first half-mirror in turn and irradiate To the industrial camera, the parallel light emitted by the fourth parallel light source sequentially passes through the third reflector, the third half mirror, the second reflector and the first half mirror, and then irradiates the industrial camera.

Further, the first reflector, the first half-mirror, the second half-mirror and the industrial camera are all fixedly connected to the camera fixing plate and fixed on the camera fixing frame through the camera fixing plate; The second reflector, the third reflector and the third half-mirror are fixed on the same mirror group mount.

Further, it also includes a screw drive mechanism, the screw drive mechanism includes a positioning motor, a coupling and a ball screw, the ball screw is arranged in parallel with the conveyor belt, and the ball screw is fixed on the camera through a bearing seat On the fixed frame, one end of the ball screw is connected to the positioning motor through a coupling, a slider is set on the ball screw, the mirror group mounting seat is fixedly connected to the slider, and the positioning motor drives the ball When the screw rotates, it drives the mounting seat of the mirror group connected with the slider to move linearly along the ball screw above the measuring bracket.

Further, the push cylinder is arranged in the middle of the conveyor belt, and the front end of the push cylinder is provided with a first push plate.

Further, a slope surface is provided on a side of the measuring bracket close to the conveyor belt.

Further, limit baffles are provided on the left and right sides of the feed inlet of the conveyor belt.

Further, the measuring bracket is provided with L-shaped ribs, the two ribs of the L-shaped ribs are perpendicular to each other, and one rib of the L-shaped rib is used to push the cylinder to compress the workpiece at the other end of the workpiece. Limit, the other rib of the L-shaped rib is used to limit the other end of the workpiece when the compression cylinder compresses the workpiece.

Further, the slider is provided with a U-shaped groove, and the bottom of the camera holder is provided with a bar-shaped slider, and the slider is set on the bar-shaped slide rail through the U-shaped groove.

Further, the measuring bracket is provided with a magnetic scale, and the end of the piston rod of the pressing cylinder is connected to a second pusher plate, and the second pusher plate is provided with a magnetic scale matched with the magnetic scale. grid head.

Further, the turning drive module includes a first support, a second support and a turning cylinder, the first support is fixed on the base, the second support is fixed on the measurement bracket, and the two ends of the turning cylinder are respectively connected to the first A support and a second support are hinged.

The technical idea of the present invention is: the workpiece will be cut into individual workpieces by an integral long strip-shaped sheet metal part in the pre-cutting process, and after the workpiece completes the cutting process, the cut workpiece will still be uncut The strip-shaped sheet metal parts are pushed forward and enter the feed port at the front end of the conveyor belt from the discharge port of the pre-cutting process. The movement direction of the workpiece is restricted by two limit baffles so that the workpiece does not shift. Enter the detection device through two limit baffles; after the workpiece enters the conveyor belt, it will be accelerated by the conveyor belt, and the moving speed set by the conveyor belt is 1.5-2 times the speed of the workpiece at the outlet in the pre-cutting process. Driven by the acceleration of the conveyor belt, it quickly enters the detection device, passes through the proximity switch and reaches the stop position, and is blocked by the stopper and cannot continue to move. The proximity switch receives the signal of the workpiece passing and transmits the signal to the controller. The controller controls The push cylinder starts to move, and the push cylinder pushes the workpiece from the conveyor belt to the measuring bracket and is blocked by one of the L-shaped ribs of the measuring bracket. The other side of the permanent rib is pressed in the direction of the other side. When the compression cylinder and the push cylinder have completed the compression operation, the workpiece is at the measurement position; The image formed by the parallel light rays emitted by a parallel light source, and the image formed by the four parallel light sources is analyzed by image recognition technology to determine whether the center and size of the installation hole are qualified; if the image formed by the four parallel light sources is captured If the images are the same, it means that the mounting holes of the shelf beams to be tested are qualified. If the images taken by the four parallel light sources do not overlap or there are missing spots in the images, it means that the mounting holes of the shelf beams to be tested are unqualified.

After the measurement is completed, the push cylinder and the compression cylinder are quickly reset, the flip drive module moves, and the measurement bracket is driven to rotate and unload. After the blanking is completed, the flip drive module drives the measurement bracket to return to the initial position.

During the movement of the pressing cylinder, the magnetic grating head at the front end of the compressing cylinder will move on the magnetic scale. At this time, the length of the workpiece can be calculated according to the moving distance of the magnetic grating head, and the length can be read directly. Mainly It is used when setting standard parts.

Some of the mirror groups are set on the lead screw drive module, which is mainly used to adjust the distance between the part of the mirror group and the industrial camera, so as to adapt to the measurement of workpieces of different lengths.

The beneficial effects of the present invention are:

1. The structure of the present invention is simple and compact, and the production cost is low. The detection process of the installation hole is continuously carried out online without interrupting the production process, which greatly improves the production efficiency and detection efficiency, and uses the detection results for real-time monitoring, effectively avoiding the occurrence of The continuous unqualified phenomenon improves the production quality.

2. The present invention utilizes the mirror group and the semi-transparent mirror group to irradiate the parallel light emitted by the parallel light sources at the bottom of the four installation holes onto the same industrial camera, and uses a time-sharing controller to control the four parallel light sources in turn. Turn it on, use an industrial camera to take pictures of the parallel light rays emitted by four parallel light sources in sequence, and use image recognition technology to analyze the images formed by the four parallel light sources to determine whether the center and size of the installation hole are qualified; If the images formed by the four parallel light sources are the same, it means that the installation holes of the shelf beams to be tested are qualified. Qualified; the detection process is convenient, the detection speed is fast, and the detection accuracy is high.

3. Using an industrial camera to shoot the overlapping beams can take a larger image, thereby improving the accuracy of judgment.

4. The present invention realizes the automatic feeding, automatic detection and automatic unloading of the detection process, the whole process does not need manual processing, and avoids the measurement errors caused by various human factors that are easy to occur in manual detection; the whole device is highly automated and greatly The detection efficiency and detection quality are improved.

5. The present invention adjusts the position of some mirror groups through the screw drive mechanism, which can meet the detection of shelf beams of different sizes, and improves the applicability of the detection equipment.

6. The present invention uses a closed casing to isolate the entire measurement device from the outside world, providing a closed measurement environment, which not only isolates light, avoids the influence of external light interference on the measurement results, but also prevents the external environment from polluting the detection device , improve the service life of the equipment.

Description of drawings

The present invention will be described in further detail below in conjunction with the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

Fig. 1 is a perspective view of a device for detecting installation holes of shelf crossbeams by using round-robin light sources according to the present invention.

Fig. 2 is a front view of a device for detecting installation holes of shelf crossbeams by using round-robin light sources according to the present invention.

Fig. 3 is a top view of a device for detecting installation holes of shelf crossbeams by using round-robin light sources according to the present invention.

Fig. 4 is a bottom view of a device for detecting installation holes of shelf crossbeams by using round-robin light sources according to the present invention.

Fig. 5 is a front view of the image capturing module of the present invention.

Fig. 6 is a left view of the image capturing module of the present invention.

Fig. 7 is a schematic diagram of the optical path of the first parallel light source of the present invention.

Fig. 8 is a schematic diagram of the optical path of the second parallel light source of the present invention.

Fig. 9 is a schematic diagram of the optical path of the third parallel light source of the present invention.

Fig. 10 is a schematic diagram of an optical path of a fourth parallel light source of the present invention.

In the figure, 1-base, 2-workpiece, 3-conveyor belt, 4-push cylinder, 5-measurement bracket, 6-industrial camera, 7-pressing cylinder, 8-proximity switch, 9-block, 10- Camera holder, 11-positioning motor, 12-ball screw, 13-coupling, 14-slider, 15-limit baffle, 16-L-shaped rib, 17-bracket, 18-bearing seat, 19 -The first pusher plate, 20-the second pusher plate, 21-strip slide rail, 22-through hole, 23-first support, 24-second support, 25-overturn cylinder, 26-first Parallel light source, 27-second parallel light source, 28-third parallel light source, 29-fourth parallel light source, 30-first half mirror, 31-second half mirror, 32-third half mirror Half mirror, 33-first reflector, 24-second reflector, 35-third reflector.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is further described:

Referring to Figures 1 to 10, a device for detecting mounting holes of shelf beams using a round-robin light source according to the present invention includes a base 1, a conveyor belt 3, a proximity switch 8, a stopper 9, a push cylinder 4, and a measuring bracket 5 , camera holder 10, image capture module, closed housing and compression cylinder 7, the closed housing is fixed on the base 1, the conveyor belt 3, proximity switch 8, block 9, measuring bracket 5, camera The fixed frame 10, the image capture module and the compression cylinder 7 are all arranged inside the closed housing; the conveyor belt 3 is arranged on the base 1, and the feed port of the conveyor belt 3 is connected to the discharge port of the pre-cutting process. The end of the conveyor belt 3 is sequentially provided with a proximity switch 8 and a stopper 9 along the direction of the conveyor belt 3. The proximity switch 8 is embedded in the base 1 and is used to detect whether a workpiece 2 passes by on the base 1 at the corresponding position. The block 9 is fixed above the base 1 and is used to limit the workpiece 2; one side of the conveyor belt 3 is provided with a push cylinder 4 perpendicular to the conveying direction of the conveyor belt 3, and the other side is provided with a measuring bracket 5, close to After the switch 8 is triggered, the push cylinder 4 is controlled to move, and the push cylinder 4 pushes the shelf beam to be measured on the conveyor belt 3 onto the measurement bracket 5; The feed port, the compression cylinder 7 is used to compress the workpiece 2 along the moving direction of the conveyor belt 3; the camera holder is fixed directly above the measuring bracket 5, and the left and right ends of the camera holder are fixed by two brackets 17 On the base 1; the two ends of the measuring bracket 5 are connected to the base 1 through two rotating shafts, and the turning drive module is respectively connected to the base 1 and the measuring bracket 5, and the turning driving module drives the measuring bracket 5 when it moves. Rotate about two axes of rotation.

Described image capture module comprises parallel light source, industrial camera 6, time-sharing controller, reflecting mirror group and half mirror group, described parallel light source is provided with four, is respectively the first parallel light source 26, the second parallel light source 27. The third parallel light source 28 and the fourth parallel light source 29, the time-sharing controller connects the first parallel light source, the second parallel light source, the third parallel light source and the fourth parallel light source and controls the first parallel light source, the second parallel light source The light source, the third parallel light source and the fourth parallel light source are turned on in turn, the reflector group includes the first reflector 33, the second reflector 34 and the third reflector 35, and the half-transparent half-mirror group includes the first Half mirror 30, the second half mirror 31 and the third half mirror 32, the first parallel light source 26, the second parallel light source 27, the third parallel light source 28 and the fourth parallel light source 29 are all arranged at the bottom of the measuring bracket 5, the measuring bracket 5 is provided with four through holes 22 corresponding to the positions of the four parallel light sources, the first parallel light source 26, the second parallel light source 27, the third parallel light source 28 and the fourth parallel light source 29 are distributed in a square shape, and the first parallel light source 26, the second parallel light source 27, the third parallel light source 28 and the fourth parallel light source 29 are respectively used to provide Four parallel light rays of four mounting holes; the industrial camera 6, the first half mirror 30 and the second half mirror 31 are successively arranged above the first parallel light source 26 from top to bottom. The industrial camera 6 is fixed on the camera holder 10, a first reflector 33 is arranged directly above the second parallel light source 27, and a second reflector 33 is arranged directly above the third parallel light source 28 from top to bottom. 34 and the third half mirror 32, the third reflector 35 is provided directly above the fourth parallel light source 29; the height of the first half mirror 30 and the second reflector 34 is the same and both The direction that conveyer belt 3 moves is inclined 45 degree and is arranged, and the height of described second half-mirror 31, the 3rd half-mirror 32, the first reflector 33 and the second reflector 34 are identical and all face vertical The direction in which the conveyor belt 3 moves is inclined at 45 degrees; the parallel rays emitted by the first parallel light source 26 pass through the second half-mirror 31 and the first half-mirror 30 sequentially and then irradiate the industrial camera 6, The parallel rays emitted by the second parallel light source 27 pass through the first reflector 33, the second half-mirror 31 and the first half-mirror 30 successively and then irradiate the industrial camera 6. The third parallel light source The parallel rays emitted by 28 pass through the third half-mirror 32, the second reflector 34 and the first half-mirror 30 and then irradiate on the industrial camera 6, and the parallel rays emitted by the fourth parallel light source 29 are sequentially After the third reflector 35, the third half-mirror 32, the second reflector 34 and the first half-mirror 30, it is irradiated onto the industrial camera 6, and the parallel rays emitted by the above four parallel light sources are finally converged into one The beam is irradiated on the industrial camera 6.

The first reflecting mirror 33, the first half-mirror 30, the second half-mirror 31 and the industrial camera 6 are all fixedly connected with the camera fixing plate and fixed on the camera fixing frame 10 by the camera fixing plate; The second reflector 34, the third reflector 35 and the third half mirror 32 are fixed on the same mirror group mount.

The device also includes a screw drive mechanism, the screw drive mechanism includes a positioning motor 11, a shaft coupling 13 and a ball screw 12, the ball screw 12 is arranged in parallel with the conveyor belt 3, and the ball screw 12 passes through The bearing seat 18 is fixed on the camera holder 10, one end of the ball screw 12 is connected to the positioning motor 11 through a coupling 13, the ball screw 12 is covered with a slider 14, and the mirror group mounting seat is connected to the slider. The block 14 is fixedly connected, and when the positioning motor 11 drives the ball screw 12 to rotate, it drives the mirror group mounting seat connected with the slider 14 to move linearly along the ball screw 12 above the measuring bracket 5 .

The pushing cylinder 4 is arranged in the middle of the conveyor belt 3 , and the front end of the pushing cylinder 4 is provided with a first pushing plate 19 . The position of the push cylinder 4 is not limited to the middle part of the conveyor belt 3, but also can be the direction in which the middle part of the conveyor belt 3 is close to the discharge end, and its position is adjustable; the position of the push cylinder 4 mainly depends on the length of the workpiece to be detected. As long as it is ensured that the distance between the push cylinder 4 and the stopper 9 is equal to half of the workpiece length during cylinder 4 position adjustment, it can be guaranteed that the push cylinder 4 is always in the middle of the workpiece when pushing the workpiece. The contact surface of the first pusher plate 19 and the workpiece 2 is a plane perpendicular to the base 1, and the contact surface of the first pusher plate 20 with the workpiece is parallel to the moving direction of the conveyor belt. The material plate 20 pushes the workpiece horizontally toward the measuring bracket 5 .

A slope surface is provided on the side of the measuring bracket 5 close to the conveyor belt 3 . When the measurement bracket 5 rotates around the rotation axis under the action of the overturning drive module, if there is no effect of the slope surface, it will inevitably cause contact between the edge of the measurement bracket 5 and the base 1, causing the rotation to not proceed normally; It is convenient for the workpiece 2 to enter the measuring bracket 5 from the base 1 and prevent the workpiece from being stuck at the joint between the base 1 and the measuring bracket 5 .

Limiting baffles 15 are provided on the left and right sides of the feeding port of the conveyor belt 3 . Two limit baffles 15 are arranged in parallel, and the distance between the two limit baffles 15 is equal to or slightly greater than the width of the conveyor belt,

The measuring bracket 5 is provided with an L-shaped rib 16, two ribs of the L-shaped rib 16 are perpendicular to each other, and one rib of the L-shaped rib 16 is used to push the cylinder 4 to compress the workpiece 2 when the workpiece 2. The spacing of the other end, the other rib of the L-shaped rib 16 is used for the spacing of the other end of the workpiece 2 when the compression cylinder 7 compresses the workpiece 2.

The slider 14 is provided with a U-shaped groove, and the bottom of the camera holder is provided with a bar-shaped slider 14 , and the slider 14 is sleeved on the bar-shaped slide rail 21 through the U-shaped groove. The slide block 14 makes linear motion back and forth along the direction parallel to the moving direction of the conveyor belt under the joint action of the strip slide rail 21 and the ball screw 12 .

The measuring bracket 5 is provided with a magnetic scale, and the end of the piston rod of the pressing cylinder 7 is connected to the second pushing plate 20, and the second pushing plate 20 is provided with a magnetic scale that matches the magnetic scale. Magnetic head. When the compression cylinder 7 moves, it drives the second pusher plate 20 at the front end of the compression cylinder 7 to move. When the second pusher plate 20 moves, it drives the magnetic grid head to move synchronously. The magnetic grid head detects the moving distance of the compression cylinder 7, and according to the pressure The length of the workpiece can be calculated from the data of the magnetic scale when the initial position of the cylinder 7 is tightened. The main function of the magnetic scale is to measure the length of the standard workpiece when replacing and measuring workpieces of different sizes.

Described overturn drive module comprises first support 23, second support 24 and overturn cylinder 25, and first support 23 is fixed on the base 1, and second support 24 is fixed on the measuring bracket 5, and the overturn cylinder 25 Both ends are hinged to the first support 23 and the second support 24 respectively. The bottom of the overturning cylinder 25 is hinged with the first support 23, and the piston rod end of the overturning cylinder 26 is hinged with the second support 24. The first support 23 is fixed, and will rotate around the first support when the overturning cylinder 25 moves. The support 23 rotates, and the end of the piston rod of the overturning cylinder 25 will drive the second support 29 to rotate circularly at a certain angle around the two rotation axes of the measuring bracket. It can be rotated within the range to facilitate the unloading process.

The above examples are preferred implementations of the present invention, and are only used to illustrate the present invention conveniently, and are not intended to limit the present invention in any form. Anyone with ordinary knowledge in the technical field, if they do not depart from the present invention, Within the scope of the technical features, the equivalent embodiments that utilize the technical content disclosed in the present invention to make partial changes or modifications without departing from the technical features of the present invention still belong to the scope of the technical features of the present invention.

Claims (10)

1. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source, it is characterised in that：Including pedestal (1), defeated It send band (3), close switch (8), block (9), push cylinder (4), measure bracket (5), camera fixed frame (10), image taking mould Block, closing housing and compression cylinder (7), the closing housing are fixed on pedestal (1), the conveyer belt (3), close switch (8), block (9), measurement bracket (5), camera fixed frame (10), image taking module and compression cylinder (7) are arranged at closing Enclosure interior；The conveyer belt (3) is arranged on pedestal (1), and the feed inlet of conveyer belt (3) connects the discharging of preposition cut off operation Mouthful, the end of the conveyer belt (3) is disposed with along conveyer belt (3) direction close to switch (8) and block (9), described close Switch (8) is embedded on pedestal (1) and whether has workpiece (2) process, the block for detecting on the pedestal (1) of corresponding position (9) it is fixed on above pedestal (1) and for being limited to workpiece (2)；The side of the conveyer belt (3) is provided perpendicular to defeated The push cylinder (4) of band (3) carriage direction setting is sent, opposite side, which is provided with, measures bracket (5), is controlled close to after switch (8) triggering Guard frame rail to be measured on conveyer belt (3) is pushed to and measures on bracket (5) by push cylinder (4) movement processed, push cylinder (4)； The compression cylinder (7), which is arranged on, to be measured on bracket (5) and close to the feed inlet of conveyer belt (3), and the compression cylinder (7) is used for Along conveyer belt (3) direction of motion workpiece pressing (2)；The camera fixed frame, which is fixed on, to be measured right over bracket (5), and camera is fixed The left and right ends of frame are fixed on by two stents (17) on pedestal (1)；The both ends for measuring bracket (5) pass through two rotations Axis connection pedestal (1), overturning drive module difference connect base (1) and measurement bracket (5), overturning drive module drive when moving The measurement bracket (5) rotates along two rotation axis；

Described image taking module includes source of parallel light, industrial camera (6), tdm controller, speculum group and semi-transparent semi-reflecting lens Group, there are four the source of parallel light is set, respectively the first source of parallel light (26), the second source of parallel light (27), third source of parallel light (28) and the 4th source of parallel light (29), the tdm controller connects the first source of parallel light (26), the second source of parallel light (27), the Three sources of parallel light (28) and the 4th source of parallel light (29) simultaneously control the first source of parallel light (26), the second source of parallel light (27), third Source of parallel light (28) and the 4th source of parallel light (29) are lighted in turn successively, and the speculum group includes the first speculum (33), the Two-mirror (34) and third speculum (35), the semi-transparent semi-reflecting microscope group include the first semi-transparent semi-reflecting lens (30), second semi-transparent Semi-reflective mirror (31) and third semi-transparent semi-reflecting lens (32), first source of parallel light (26), the second source of parallel light (27), third are parallel Light source (28) and the 4th source of parallel light (29) are arranged at described measurement bracket (5) bottom, the first source of parallel light (26), second flat Line light source (27), third source of parallel light (28) and the 4th source of parallel light (29) are square distribution, first source of parallel light (26), Second source of parallel light (27), third source of parallel light (28) and the 4th source of parallel light (29) are respectively configured to provide perpendicular to workpiece (2) And through four parallel rays of workpiece (2) upper four mounting holes；The surface of first source of parallel light (26) is from top to bottom It is equipped with industrial camera (6), the first semi-transparent semi-reflecting lens (30) and the second semi-transparent semi-reflecting lens (31) successively, the industrial camera (6) is solid It is scheduled on camera fixed frame (10), the surface of second source of parallel light (27) is equipped with the first speculum (33), the third The surface of source of parallel light (28) is equipped with the second speculum (34) and third semi-transparent semi-reflecting lens (32) successively from top to bottom, and described the The surface of four sources of parallel light (29) is equipped with third speculum (35)；First semi-transparent semi-reflecting lens (30) and the second speculum (34) height is identical and tilts 45 degree to the direction that conveyer belt (3) moves and sets, second semi-transparent semi-reflecting lens (31), the Three semi-transparent semi-reflecting lens (32), the first speculum (33) are identical with the height of the second speculum (34) and equal direction is perpendicular to conveyer belt (3) direction of movement tilts 45 degree of settings；The parallel rays that first source of parallel light (26) is projected is semi-transparent by second successively It is irradiated on industrial camera (6) after semi-reflective mirror (31) and the first semi-transparent semi-reflecting lens (30), second source of parallel light (27) is projected Parallel rays irradiated after the first speculum (33), the second semi-transparent semi-reflecting lens (31) and the first semi-transparent semi-reflecting lens (30) successively Onto industrial camera (6), parallel rays that the third source of parallel light (28) is projected successively by third semi-transparent semi-reflecting lens (32), It is irradiated on industrial camera (6) after second speculum (34) and the first semi-transparent semi-reflecting lens (30), the 4th source of parallel light (29) The parallel rays of injection is successively by third speculum (35), third semi-transparent semi-reflecting lens (32), the second speculum (34) and first It is irradiated to after semi-transparent semi-reflecting lens (30) on industrial camera (6), the parallel rays that aforementioned four source of parallel light projects finally pools It is a branch of to be irradiated on industrial camera (6).

2. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source according to claim 1, feature It is：First speculum (33), the first semi-transparent semi-reflecting lens (30), the second semi-transparent semi-reflecting lens (31) and industrial camera (6) are equal It is fixedly connected with camera fixed plate and passes through camera fixed plate and be fixed on camera fixed frame (10)；Second speculum (34), third speculum (35) and third semi-transparent semi-reflecting lens (32) are fixed in same microscope group mounting base.

3. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source according to claim 2, feature It is：Screw drive mechanism is further included, the screw drive mechanism includes positioning motor (11), shaft coupling (13) and ball-screw (12), the ball-screw (12) is arranged in parallel with conveyer belt (3), and the ball-screw (12) is fixed on by bearing block (18) On camera fixed frame (10), one end of the ball-screw (12) connects positioning motor (11), the rolling by shaft coupling (13) Sliding block (14) is set on ballscrew (12), the microscope group mounting base is fixedly connected with sliding block (14), the positioning motor (11) The ball-screw (12) is driven to be driven when rotating with the microscope group mounting base that sliding block (14) is connect above the measurement bracket (5) It moves along a straight line along ball-screw (12).

4. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source according to claim 1, feature It is：The push cylinder (4) is arranged on the middle part of the conveyer belt (3), and the front end of push cylinder (4) is provided with the first pusher Plate (19).

5. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source according to claim 1, feature It is：The bracket (5) that measures is provided with slope close to the side of the conveyer belt (3).

6. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source according to claim 1, feature It is：Postive stop baffle (15) is both provided at left and right sides of the feed inlet of the conveyer belt (3).

7. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source according to claim 1, feature It is：L-type rib (16) is provided on the measurement bracket (5), two ribs of the L-type rib (16) are mutually perpendicular to, L-type One rib of rib (16) is used for the limiting of workpiece (2) other end, L-type rib (16) during push cylinder (4) workpiece pressing (2) Another rib be used for compression cylinder (7) workpiece pressing (2) when workpiece (2) other end limiting.

8. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source according to claim 3, feature It is：The sliding block (14) is equipped with U-shaped groove, and camera fixed frame bottom is equipped with stripe shape sliding block (14), and the sliding block (14) is logical U-shaped groove is crossed to be sleeved on bar shaped sliding rail (21).

9. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source according to claim 1, feature It is：The measurement bracket (5) is equipped with magnetic railings ruler, and the piston rod end of the compression cylinder (7) connects the second scraping wings (20), it is provided on the second scraping wings (20) and the matched magnetic grid head of the magnetic railings ruler.

10. a kind of device that guard frame rail mounting hole detection is carried out using repeating query light source according to claim 1, feature It is：The overturning drive module includes the first bearing (23), the second bearing (24) and tumble cylinder (25), the first bearing (23) It is fixed on pedestal (1), the second bearing (24), which is fixed on, to be measured on bracket (5), and the both ends of tumble cylinder (25) are respectively with first Bearing (23) and the second bearing (24) are hinged.